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Finding the Third Proportional to 6,723.75 and 8,878.13

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Solution

The third proportional to 6,723.75 and 8,878.13 is: 11,722.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,723.75 : 8,878.13 = 8,878.13 : x
  2. Step 2: Convert to fraction form
    6,723.75/8,878.13 = 8,878.13/x
  3. Step 3: Cross multiply
    6,723.75x = 8,878.13 × 8,878.13
  4. Step 4: Simplify right side
    6,723.75x = 78,821,103.52
  5. Step 5: Solve for x
    x = 78,821,103.52/6,723.75
  6. Step 6: Final answer
    x = 11,722.79

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.